Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

We learn more from failure than we do from success.

Whenever you find yourself doubting how far you can go, just remember how far you have come.

Success can never happen without the journey (struggle).

The journey of a thousand miles begins with one step.

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

Do what you have always done and you will always be what you have always been

Tough times never last, but tough people do.

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

Hard work beats talent when talent doesn't work hard.

You can have results or excuses, not both

99% of genius comes from hard work, the remaining 1% comes from innate talent

Hope might be a good breakfast, but it makes a very poor dinner

Failure is NOT your destiny. Failure is the key to success.